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Mary Madden — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Madden across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Ellen — first a daughter (b.~1895), then head of a 4-person household.
Age 45
b. ~1895
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Madden |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Watertown Town |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Secretary |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1800 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Secretary |
| Township / Ward | Watertown Town |
| Est. Birth Year | ~1895 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ellen Madden | Head | — | 67 | ~1873 |
| Helen Madden | Daughter | — | 43 | ~1897 |
| Joseph Madden | Son | — | 39 | ~1901 |
| Mary Madden | Daughter | — | 45 | ~1895 |
Census Appearances
1920
Middlesex, Massachusetts
Other, age 25
Middlesex, Massachusetts · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | Margaret E |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Stenographer |
| Industry | Laundry Soap Co. |
| Class of Worker | Wage |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Other, age 35
Middlesex, Massachusetts · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Madden |
| Given Name | Margaret J |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 18 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Home Value / Rent | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 45
Middlesex-County, Massachusetts · implied b. ~1895 — 4 household members
| Surname | Madden |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Watertown Town |
| 1935 Residence (County) | Middlesex |
| Occupation | Secretary |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1800 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Madden across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Ellen Madden (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Ellen Madden
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Madden
Daughter · 1940 · age 45 · b. ~1895 · Massachusetts
★ You are viewing this record
Sibling
Joseph Madden
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Madden
Sibling · 1940 · age 43
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01620-00199)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cynthia Leonard | 7 | Daughter | — | Massachusetts |
| 42 | Evans K Dexter | 49 | Head | Special Agent | Massachusetts |
| 43 | Phoebe Dexter | 45 | Wife | — | Canada |
| 44 | Jean E Dexter | 17 | Daughter | — | Massachusetts |
| 45 | Madelyn Dexter | 14 | Daughter | — | Massachusetts |
| 46 | Shirley Dexter | 11 | Daughter | — | Massachusetts |
| 47 | Charles A Dexter | 9 | Son | — | Massachusetts |
| 48 | George Barker | 38 | Head | Auditor | Massachusetts |
| 49 | Ann Barker | 38 | Wife | — | Massachusetts |
| 50 | Frederick Larson | 49 | Head | Assistant Sales Manager | Massachusetts |
| 51 | Jean Larson | 48 | Wife | — | Rhode Island |
| 52 | Robert Larson | 22 | Son | — | Massachusetts |
| 53 | Mary L Larson | 19 | Daughter | Secretary | Massachusetts |
| 54 | Donald Larson | 11 | Son | — | Massachusetts |
| 55 | Jeannette Larson | 9 | Daughter | — | Massachusetts |
| 56 | Ralph M Lull | 46 | Head | Proprietor | Massachusetts |
| 57 | Lillian Lull | 43 | Wife | — | Connecticut |
| 58 | Harry Jakeman | 54 | Head | N. E. Manager | Canada |
| 59 | Alma Jakeman | 51 | Wife | — | Canada |
| 60 | Bethia Jakeman | 22 | Daughter | Clerical | Massachusetts |
| 61 | William Macgregor | 66 | Head | — | Pennsylvania |
| 62 | Paula E Macgregor | 61 | Wife | — | Wisconsin |
| 63 | Helen D Macgregor | 33 | Daughter | School Teacher | Michigan |
| 64 | Following Persons | None | Live On | — | — |
| 65 | Thomas H Gallagher | 45 | Head | Foreman | Massachusetts |
| 66 | Marion Gallagher | 42 | Wife | — | Massachusetts |
| 67 | Thomas F Gallagher | 16 | Son | — | Massachusetts |
| 68 | Dorthea Gallagher | 13 | Daughter | — | Massachusetts |
| 69 | Edmund Gallagher | 10 | Son | — | Massachusetts |
| 70 | Following Persons | None | Live On | — | — |
| 71 | Ellen Madden | 67 | Head | — | Ireland |
| 72 | Mary E Madden THIS PERSON | 45 | Daughter | Secretary | Massachusetts |
| 73 | Helen Madden | 43 | Daughter | Secretary | Massachusetts |
| 74 | Joseph F Madden | 39 | Son | — | Massachusetts |
| 75 | Everett A Kelly | 64 | Head | Superintendent | Massachusetts |
| 76 | Jessie P Kelly | 62 | Wife | — | Canada |
| 77 | Olive E Kelly | 36 | Daughter | Secretary | Massachusetts |
| 78 | Warren T Kelly | 14 | Son | — | Massachusetts |
| 79 | Following Persons | None | On Common | — | — |
| 80 | Edward J Sherlock | 61 | Head | State Detective | Massachusetts |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)